"T is T," said Jones, the "Parks and Recreation" actress, "meaning Tory is timeless." "New Girl" actress Hannah Simone agreed. "I grew up in Cyprus, and her clothes are so effortless, they remind me of home -- a very stylish home."

Simone said she's been busy taping promos for the episode of "New Girl" that will air directly after the Super Bowl. Pop god Prince is making a guest appearance on the show, which has been "so incredible," she said.

I reminded Simone that Prince played a role in Burch's success, too, by wearing a studded women's Tory tunic onstage at the Coachella Art and Music Festival in 2008 and thus cementing the designer's image in the pop culture pantheon.

Burch, who launched her brand in 2004, has always had a strong connection to the music world, as a fan (in her teenage years it was the Grateful Dead, and later hip-hop) and supporter. She dated Lyor Cohen, former head of Warner Music Group, who started his career as Run-D.M.C.'s road manager in the '80s, and took pal Kanye West as her date to the Metropolitan Museum of Art's Costume Institute Gala one year.

So naturally, she brought in a great DJ for her Rodeo Drive bash -- Q-Tip, a founding member of hip-hop group A Tribe Called Quest, who has been in the news this week for inking a deal with Leonardo DiCaprio and Jonah Hill to develop a scripted TV series about his experiences.

"We're here to celebrate the incomparable Ms. Burch," Q-Tip could be heard saying over the sound system, his voice reverberating through the three-story boutique, and onto the roof. There, guests gathered by the outdoor fireplace, sipped Moet & Chandon from tiny bottles, and watched a dreamy short film by L.A. style maven Lisa Eisner projected onto the side of the building next door.

The film features the Rodeo Drive Collection, a capsule created to celebrate the opening.

"What an incredible night," Burch said. "Seeing so many people I've known for so long, friends and my incredible team. I couldn't be happier."